My google-fu has failed me so I'm hoping someone here can point me in the right direction. I'm in the middle of doing some data validation efforts and I suspect the system is recording some invalid ...

I have a prstat log, as you all know the date and time is recorded on the top of the log file, I would like to add that date and time to the begging of each line until it gets to a new date, then I ...

I have a big share (~5TB) that is getting full.
Now I want to make a script that deletes data from 2 specified folders. But this need to be the oldest files/folders and it need to stop when ~50GB has ...

I've just executed a long-running process from the bash prompt. In hindsight, I wish I'd run time on it, or noted down the time at which I kicked it off.
Is there any way of getting this information ...

For files within a specific folder, I would like vim to never touch "modified"
timestamp at all.
The background is that I use Bloxsom for blogging, which uses plain text
files in ~/bloxsom as source ...

My web-scraping scripts have long enjoyed using date -d to read in human-formatted time and date stamps like "March 11, 1999" and convert to any other format I need via the -s parameter.
How might I ...

I would like to copy a set of files from directory A to directory B, with the caveat that if a file in directory A is identical to a file in directory B, that file should not be copied (and thus its ...

I am creating a simple backup script. I would like to have a message saying "You last backed up x days ago" on login. I can create a file when I do the backup "backup/.last_backup_timestamp" but what ...

I'm trying to open a file with vim from the command line, the file is in a directory filled with automatically generated files that are prepended with a time stamp. Since I don't know the time stamps ...

Why is a signed integer used to represent timestamps? There is a clearly defined start at 1970 that's represented as 0, so why would we need numbers before that? Are negative timestamps used anywhere?
...

Is it possible to sync files via rsync and let rsync only compare mtime informations?
Or is there another tool for this job?
That means that such a tool only copies src to destination if the src is ...

File timestamps accuracy is limited to one second for EXT3, one microsecond for UFS, and one nanosecond for EXT4 (at least according to experience). Is there any way to determine this based only on ...

/var/log/messages, /var/log/syslog, and some other log files use a timestamp which contains an absolute time, like Jan 13 14:13:10.
/var/log/Xorg.0.log and /var/log/dmesg, as well as the output of $ ...